A V 250 waterbar (also known as a V250 waterstop) is a 250mm wide, heavy-duty flexible PVC strip engineered specifically to seal internal construction joints in watertight concrete structures. The "V" profile designation means it is flat with multiple ribs designed for centrally-placed non-movement joints, rather than expansion joints which feature a hollow center bulb.Key ApplicationsWater-retaining structures: Used in reservoirs, swimming pools, water tanks, dams, canals, and sewage treatment plants.Water-excluding structures: Ideal for keeping groundwater out of large basements, underground car parks, subways, lift pits, and retaining walls.